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Torbjørn Vrålstad
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Proceedings Papers

Advanced Laboratory Setup to Determine and Verify Cement Sheath Integrity

Ali Taghipour, Blandine Feneuil, Torbjørn Vrålstad, Ragnhild Skorpa
Proc. ASME. OMAE2022, Volume 10: Petroleum Technology, V010T11A035, June 5–10, 2022
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2022-81072
https://doi.org/10.1115/OMAE2022-81072
View Paper titled, Advanced Laboratory Setup to Determine and Verify Cement Sheath Integrity
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Topics: Carbon capture and storage, Cements (Adhesives)
Journal Articles

Leakages Through Radial Cracks in Cement Sheaths: Effect of Geometry, Viscosity, and Aperture

Ragnhild Skorpa, Torbjørn Vrålstad
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. January 2022, 144(1): 013006.
Paper No: JERT-21-1542
https://doi.org/10.1115/1.4052610
Published Online: October 18, 2021
View Article titled, Leakages Through Radial Cracks in Cement Sheaths: Effect of Geometry, Viscosity, and Aperture
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Topics: Cements (Adhesives), Flow (Dynamics), Fluids, Fracture (Materials), Geometry, Leakage, Methane, Viscosity, Water, Pressure gradient
Proceedings Papers

Cement Sheath Integrity During High Temperature Geothermal Well Operations

Torbjørn Vrålstad, Ragnhild Skorpa, Nils Opedal, Jelena Todorovic, Nicolaine Agofack, Nguyen-Hieu Hoang
Proc. ASME. OMAE2021, Volume 10: Petroleum Technology, V010T11A033, June 21–30, 2021
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2021-65116
https://doi.org/10.1115/OMAE2021-65116
View Paper titled, Cement Sheath Integrity During High Temperature Geothermal Well Operations
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Topics: Cements (Adhesives), Geothermal engineering, High temperature, Wells
Proceedings Papers

Leakages Through Radial Cracks in Cement Sheaths: Effect of Geometry, Viscosity and Aperture

Ragnhild Skorpa, Torbjørn Vrålstad
Proc. ASME. OMAE2020, Volume 11: Petroleum Technology, V011T11A034, August 3–7, 2020
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2020-18496
https://doi.org/10.1115/OMAE2020-18496
View Paper titled, Leakages Through Radial Cracks in Cement Sheaths: Effect of Geometry, Viscosity and Aperture
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Topics: Cements (Adhesives), Computational fluid dynamics, Fracture (Materials), Geometry, Leakage, Viscosity
Proceedings Papers

Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests

Sohrab Gheibi, Sigbjørn Sangesland, Torbjørn Vrålstad
Proc. ASME. OMAE2019, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A037, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96319
https://doi.org/10.1115/OMAE2019-96319
View Paper titled, Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests
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Topics: Cements (Adhesives), Computer simulation, Fracture (Materials), Fracture (Process), Pressure
Proceedings Papers

Experimental Study of Pipe Pulling Through Settled Barite

Ali Taghipour, Torbjørn Vrålstad, Ragnhild Skorpa, Mohammad Hossain Bhuiyan, Jan David Ytrehus, Anna Stroisz
Proc. ASME. OMAE2019, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A058, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96547
https://doi.org/10.1115/OMAE2019-96547
View Paper titled, Experimental Study of Pipe Pulling Through Settled Barite
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Topics: Pipes, Annulus, Wells, Drills (Tools), Fluids, Particulate matter, Drilling, Ocean engineering, Slurries, Cements (Adhesives)
Proceedings Papers

Effect of Rock on Cement Sheath Integrity: Shale vs. Sandstone

Ragnhild Skorpa, Benjamin Werner, Torbjørn Vrålstad
Proc. ASME. OMAE2019, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A038, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96738
https://doi.org/10.1115/OMAE2019-96738
View Paper titled, Effect of Rock on Cement Sheath Integrity: Shale vs. Sandstone
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Topics: Cements (Adhesives), Rocks, Shales, Stiffness
Proceedings Papers

Cement Plug Sealing Studies of Silica Cement Systems

Anisa Noor Corina, Nils van der Tuuk Opedal, Torbjørn Vrålstad, Sigbjørn Sangesland
Proc. ASME. OMAE2019, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A056, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-95928
https://doi.org/10.1115/OMAE2019-95928
View Paper titled, Cement Plug Sealing Studies of Silica Cement Systems
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Topics: Cements (Adhesives), Sealing (Process), Hardening (Curing), Leakage, Flow (Dynamics), Fluid dynamics, Gas flow, High temperature, Pressure, Safety
Proceedings Papers

Cement Bond Strength Measurements

Nils Opedal, Pierre Cerasi, Torbjørn Vrålstad
Proc. ASME. OMAE2019, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A039, June 9–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2019-96773
https://doi.org/10.1115/OMAE2019-96773
View Paper titled, Cement Bond Strength Measurements
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Topics: Bond strength, Cements (Adhesives)
Proceedings Papers

Laboratory Set-Up for Determination of Cement Sheath Integrity During Pressure Cycling

Ragnhild Skorpa, Thomas Øia, Ali Taghipour, Torbjørn Vrålstad
Proc. ASME. OMAE2018, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A039, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-78696
https://doi.org/10.1115/OMAE2018-78696
View Paper titled, Laboratory Set-Up for Determination of Cement Sheath Integrity During Pressure Cycling
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Topics: Cements (Adhesives), Pressure, Fracture (Materials), Failure mechanisms, Annulus, Computerized tomography, Failure, Pipes, Rocks, Temperature
Proceedings Papers

Rheological Properties of Barite Sediments in Water-Based Drilling Fluids

Torbjørn Vrålstad, Ragnhild Skorpa, Arild Saasen
Proc. ASME. OMAE2018, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A068, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-78695
https://doi.org/10.1115/OMAE2018-78695
View Paper titled, Rheological Properties of Barite Sediments in Water-Based Drilling Fluids
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Topics: Drilling, Fluids, Rheology, Sediments, Water, Gravity (Force), Annulus, Polymers, Separation (Technology)
Proceedings Papers

Laboratory Test on Cement Plug Integrity

Nils Opedal, Anisa Noor Corina, Torbjørn Vrålstad
Proc. ASME. OMAE2018, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A071, June 17–22, 2018
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2018-78347
https://doi.org/10.1115/OMAE2018-78347
View Paper titled, Laboratory Test on Cement Plug Integrity
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Topics: Cements (Adhesives), Pressure, Design, Flow (Dynamics), Bonding, Flowmeters, Petroleum industry, Risk, Sealing (Process), Surface properties
Journal Articles

Geopolymers as an Alternative for Oil Well Cementing Applications: A Review of Advantages and Concerns

Mahmoud Khalifeh, Arild Saasen, Helge Hodne, Rune Godøy, Torbjørn Vrålstad
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research-Article
J. Energy Resour. Technol. September 2018, 140(9): 092801.
Paper No: JERT-17-1570
https://doi.org/10.1115/1.4040192
Published Online: May 29, 2018
View Article titled, Geopolymers as an Alternative for Oil Well Cementing Applications: A Review of Advantages and Concerns
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Topics: Cements (Adhesives), Compressive strength, Fluids, Shear (Mechanics), Shrinkage (Materials), Slurries, Temperature, Bond strength, Oil well cementing, Tensile strength
Proceedings Papers

Improved Laboratory Set-Up for Pressurized and Confined Cement Sheath Integrity Tests

Ali Taghipour, Nils Opedal, Ragnhild Skorpa, Torbjørn Vrålstad
Proc. ASME. OMAE2017, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A032, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-62444
https://doi.org/10.1115/OMAE2017-62444
View Paper titled, Improved Laboratory Set-Up for Pressurized and Confined Cement Sheath Integrity Tests
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Topics: Cements (Adhesives), Rocks, Fracture (Materials), Pressure, Annulus, Boundary-value problems, Computerized tomography, Failure mechanisms, Pipes, Temperature
Proceedings Papers

Geopolymers As an Alternative for Oil Well Cementing Applications: A Review of Advantages and Concerns

Mahmoud Khalifeh, Arild Saasen, Helge Hodne, Rune Godøy, Torbjørn Vrålstad
Proc. ASME. OMAE2017, Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology, V008T11A029, June 25–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2017-61227
https://doi.org/10.1115/OMAE2017-61227
View Paper titled, Geopolymers As an Alternative for Oil Well Cementing Applications: A Review of Advantages and Concerns
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Topics: Bond strength, Cements (Adhesives), Compressive strength, Fluids, Oil well cementing, Polymers, Rocks, Shear (Mechanics), Shrinkage (Materials), Slurries
Proceedings Papers

A Study of Possible Solutions for Cost Efficient Subsea Well Abandonment

Fatemeh Moeinikia, Kjell Kåre Fjelde, Jostein Sørbø, Arild Saasen, Torbjørn Vrålstad
Proc. ASME. OMAE2015, Volume 10: Petroleum Technology, V010T11A030, May 31–June 5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2015-41261
https://doi.org/10.1115/OMAE2015-41261
View Paper titled, A Study of Possible Solutions for Cost Efficient Subsea Well Abandonment
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Topics: Ocean engineering, Tubing, Wells, Semi-submersible offshore structures, Vessels, Arctic region, Construction, Design, Drilling, Regulations
Proceedings Papers

Cement Sheath Integrity Implications of Scaled-Down Wellbore Casing-Cement-Formation Sections

Jesus De Andrade, Sigbjørn Sangesland, Torbjørn Vrålstad, Michael Golan
Proc. ASME. OMAE2014, Volume 5: Materials Technology; Petroleum Technology, V005T11A019, June 8–13, 2014
Publisher: American Society of Mechanical Engineers
Paper No: OMAE2014-24266
https://doi.org/10.1115/OMAE2014-24266
View Paper titled, Cement Sheath Integrity Implications of Scaled-Down Wellbore Casing-Cement-Formation Sections
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Topics: Cements (Adhesives), Stress, Pressure, Stress concentration, Temperature, Wells, Annulus, Failure, Finite element analysis, Fracture (Materials)